磁聚变装置中O模ECRH实验中边缘输运势垒的低阈值诱导侧向散射不稳定性
Low-threshold induced side-scattering instability in the edge transport barrier at O-mode ECRH experiments in magnetic fusion devices
摘要:
预测了托卡马克边缘输运势垒中的低杂波俘获。这种效应使得在电子回旋共振加热实验中激发低功率阈值绝对参量衰减不稳定性,导致普通微波泵浦的侧向散射成为可能。这种不稳定性会导致目前的机器和ITER中功率沉积轮廓的加宽。
英文摘要:
The lower hybrid wave trapping in a tokamak edge transport barrier is predicted. This effect makes possible excitation of the low-power-threshold absolute parametric decay instability leading to side-scattering of the ordinary microwave pump in the electron cyclotron resonance heating experiments. The instability can result in broadening of the power deposition profile both in present day machines and in ITER.
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